HP 8341b - Section 8; Power Supplies;Fan

Power
Supplies/Fan
Assembly-Level Service
CONTENTS
INTRODUCTION
...............................................................
1-1
Assemblies
..................................................................
1-1
THEORY
OF
OPERATION
......................................................
1-2
Primary
Power
..............................................................
1-2
Line
Module
.................................................................
1-2
A19
Capacitor
Assembly
........................................................
1-3
A35
Rectifier
Assembly
.........................................................
1-3
A52
Positive Regulator
.........................................................
1-4
A53
Negative
Regulator
........................................................
1-4
A56
-15V
Regulator
...........................................................
1-4
Power
Supplies
..............................................................
1-4
Supply
Failure Monitoring
Circuitry
...............................................
1-5
Standby
Mode
................................................................
1-5
Power
Supplies/Fan
Simplified
Block
Diagram
.....................................
1-7
ASSEMBLY-LEVEL
TROUBLESHOOTING
.......................................
1-9
Instrument
Blows Line
Fuse
.....................................................
1-9
Line
Module
Troubleshooting
...................................................
1-10
Rectifiers
and
Regulators
......................................................
1-10
Power
Supply
Troubleshooting to
Assembly-Level
Flow
Chart
........................
1-11
Power
Supplies/Fan
Block
Diagram
..............................................
1-13
Power
Supply
Destination Chart
................................................
1-15
Power
Supplies/Fan
Major
Assemblies
Location
Diagram
............................
1-16
REPAIR
PROCEDURES
.......................................................
1-18
Transformer Replacement
.....................................................
1-18
Line
Module
Replacement
.....................................................
1-19
Fan
Replacement
............................................................
1-20
REPLACEABLE
PARTS
.......................................................
1-24
HP
8340B/41B
Table
of
Contents
i/ii